-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

To ensure the image has not been corrupted in transmit or tampered with,
perform the following two steps to cryptographically verify image integrity:

1. Verify the authenticity of this file by checking that it is signed with our
   GPG release key:

    $ curl https://raw.githubusercontent.com/turnkeylinux/common/18.x/keys/tkl-bookworm-images.asc | gpg --import
    $ gpg --list-keys --with-fingerprint release-bookworm-images@turnkeylinux.org
      pub   rsa4096 2023-05-22 [SC] [expires: 2043-05-17]
            2614 7592 087C 0EDE 4214  3B63 7761 DEBA BBCF BA7C
      uid           [ unknown] TurnKey GNU/Linux Bookworm Images (GPG signing key for TurnKey Linux Bookworm Images) <release-bookworm-images@turnkeylinux.org>
      sub   rsa4096 2023-05-22 [S] [expires: 2043-05-17]
      
    $ gpg --verify turnkey-silverstripe-18.0-bookworm-amd64.iso.hash
      gpg: Signature made using RSA key ID 26147592087C0EDE42143B637761DEBABBCFBA7C
      gpg: Good signature from "0"

2. Recalculate the image hash and make sure it matches your choice of hash below.

    $ sha256sum turnkey-silverstripe-18.0-bookworm-amd64.iso
      d071e1da47bc903286011bc266d4f6d4972478900391e3d3a2467ff13e20e433  turnkey-silverstripe-18.0-bookworm-amd64.iso

    $ sha512sum turnkey-silverstripe-18.0-bookworm-amd64.iso
      ef90596be24283aa1bb49331b836bb0ac1fbdb0b9f300c7bc1e9e3c8b7d11f568eaf77222bd65831abdf1f3458f59464a7677c785a5206832fa4a91147cb456d  turnkey-silverstripe-18.0-bookworm-amd64.iso

   Note, you can compare hashes automatically::

    $ sha256sum -c turnkey-silverstripe-18.0-bookworm-amd64.iso.hash
      turnkey-silverstripe-18.0-bookworm-amd64.iso: OK

    $ sha512sum -c turnkey-silverstripe-18.0-bookworm-amd64.iso.hash
      turnkey-silverstripe-18.0-bookworm-amd64.iso: OK

    Final note, when checking SHAs automatically, please ignore warning noting that some lines are improperly formatted.

-----BEGIN PGP SIGNATURE-----

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phL19J3EbPrRGKMYDxgNnaEk0hroKkoEJDqgefryq4JxVubg4qOxUBG9K60bFl1J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=VqCq
-----END PGP SIGNATURE-----